AEGIS open-sources an MCP gateway requiring per-call approval of exact tool arguments

Leather_Tour_794 · reddit · 2026-10-27

The maintainer of AEGIS (MIT-licensed, Windows-first desktop beta from Escape Studio) argues that approving agent tool calls by name alone is insufficient—the same file-writing tool differs greatly between a notes path and a credential path. Its validating MCP gateway verifies the tool and schema on configured routes, then requires a one-use approval bound to the exact call and arguments; the grant is consumed before forwarding and separate requests need separate approvals. It also ships a selected-action policy that can deny routed commands pre-process-creation, static review of skills/projects, process investigation, and manual pause/stop. Controls require explicit setup; ordinary monitoring never auto-blocks. Code is on GitHub, and the author asks what additional context reviewers would want when approving calls.

Related event: Escape Studio Open-Sources AEGIS, an MCP Security Gateway(2 posts)→

Original post →

More from coding & agent

coding & agent channel →